21690260

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37397}}^1$

素因数の和:37435

約数の個数: 24

約数和(自身を含む): 47121480

約数和(自身を除く): 25431220

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 37397, 74794, 149588, 186985, 373970, 747940, 1084513, 2169026, 4338052, 5422565, 10845130, 21690260]

約数ペア:

[(1, 21690260), (2, 10845130), (4, 5422565), (5, 4338052), (10, 2169026), (20, 1084513), (29, 747940), (58, 373970), (116, 186985), (145, 149588), (290, 74794), (580, 37397)]